Module mem 

Functionality to establish and manage an individual sandbox’s memory.

• Virtual Address

0x0000 PML4 0x1000 PDPT 0x2000 PD 0x3000 The guest ELF image (loaded into the sandbox’s memory).

• The pointer passed to the Entrypoint in the Guest application is the size of page table + size of code, at this address structs below are laid out in this order

Modules

layout

Functionality to establish a sandbox’s memory layout. This module describes the virtual and physical addresses of a number of special regions in the guest VM, although we hope to reduce the number of these over time.

memory_region

memory regions to be mapped inside a vm

mgr

Functionality that wraps a SandboxMemoryLayout and a SandboxMemoryConfig to mutate a sandbox’s memory as necessary.

ptr

Structures to represent pointers into guest and host memory

ptr_offset

Structures to represent an offset into a memory space

shared_mem

A wrapper around unsafe functionality to create and initialize a memory region for a guest running in a sandbox.